add empty trash button (#739)

CHANGELOG.md

@@ -14,6 +14,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Fix bug where filler would behave as if it were configured to pad even though a different mode was selected
 - Fix bug where mid-roll count filler would skip scheduling the final chapter in an episode 
 
+### Added
+- Add `Empty Trash` button to `Trash` page
+
 ## [0.5.0-beta] - 2022-04-13
 ### Fixed
 - Fix `HLS Segmenter` bug where it would drift off of the schedule if a playout was changed while the segmenter was running

ErsatzTV.Application/Maintenance/Commands/EmptyTrash.cs

@@ -0,0 +1,5 @@
+using ErsatzTV.Core;
+
+namespace ErsatzTV.Application.Maintenance;
+
+public record EmptyTrash : IRequest<Either<BaseError, Unit>>;

ErsatzTV.Application/Maintenance/Commands/EmptyTrashHandler.cs

@@ -0,0 +1,55 @@
+using ErsatzTV.Core;
+using ErsatzTV.Core.Interfaces.Repositories;
+using ErsatzTV.Core.Interfaces.Search;
+using ErsatzTV.Core.Search;
+using ErsatzTV.Infrastructure.Search;
+
+namespace ErsatzTV.Application.Maintenance;
+
+public class EmptyTrashHandler : IRequestHandler<EmptyTrash, Either<BaseError, Unit>>
+{
+    private readonly IMediaItemRepository _mediaItemRepository;
+    private readonly ISearchIndex _searchIndex;
+
+    public EmptyTrashHandler(
+        IMediaItemRepository mediaItemRepository,
+        ISearchIndex searchIndex)
+    {
+        _mediaItemRepository = mediaItemRepository;
+        _searchIndex = searchIndex;
+    }
+
+    public async Task<Either<BaseError, Unit>> Handle(
+        EmptyTrash request,
+        CancellationToken cancellationToken)
+    {
+        string[] types =
+        {
+            SearchIndex.MovieType,
+            SearchIndex.ShowType,
+            SearchIndex.SeasonType,
+            SearchIndex.EpisodeType,
+            SearchIndex.MusicVideoType,
+            SearchIndex.OtherVideoType,
+            SearchIndex.SongType,
+            SearchIndex.ArtistType
+        };
+
+        var ids = new List<int>();
+
+        foreach (string type in types)
+        {
+            SearchResult result = await _searchIndex.Search($"type:{type} AND (state:FileNotFound)", 0, 0);
+            ids.AddRange(result.Items.Map(i => i.Id));
+        }
+
+        Either<BaseError, Unit> deleteResult = await _mediaItemRepository.DeleteItems(ids);
+        if (deleteResult.IsRight)
+        {
+            await _searchIndex.RemoveItems(ids);
+            _searchIndex.Commit();
+        }
+
+        return deleteResult;
+    }
+}

ErsatzTV/Pages/Trash.razor

@@ -74,6 +74,17 @@
             {
                 <MudText>Nothing to see here...</MudText>
             }
+            else
+            {
+                <div style="margin-left: auto">
+                    <MudButton Variant="Variant.Filled"
+                               Color="Color.Error"
+                               StartIcon="@Icons.Material.Filled.DeleteForever"
+                               OnClick="@(_ => EmptyTrash())">
+                        Empty Trash
+                    </MudButton>
+                </div>
+            }
         }
     </div>
 </MudPaper>
@@ -560,4 +571,21 @@
         }
     }
 
+    private async Task EmptyTrash()
+    {
+        int count = _movies.Count + _shows.Count + _seasons.Count + _episodes.Count + _artists.Count +
+                    _musicVideos.Count + _otherVideos.Count + _songs.Count;
+        
+        var parameters = new DialogParameters { { "EntityType", count.ToString() }, { "EntityName", "missing items" } };
+        var options = new DialogOptions { CloseButton = true, MaxWidth = MaxWidth.ExtraSmall };
+
+        IDialogReference dialog = Dialog.Show<DeleteFromDatabaseDialog>("Delete From Database", parameters, options);
+        DialogResult result = await dialog.Result;
+        if (!result.Cancelled)
+        {
+            await Mediator.Send(new EmptyTrash(), CancellationToken);
+            await RefreshData();
+        }
+    }
+
 }